1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea

CAS NO.：34014-18-1
Empirical Formula: C9H16N4OS
Molecular Weight: 228.31
MDL number: MFCD00078732
EINECS: 251-793-7
SAFETY DATA SHEET (SDS)
Update Date: 2024-08-19 05:41:50

What is 1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea?

The Uses of 1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea

Tebuthiuron is an nonselective broad spectrum herbicide used to control weeds, woody and herbaceous plants.

The Uses of 1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea

Herbicide.

The Uses of 1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea

Nonselective herbicide used to control herbaceous and woody plants on noncrop land.

Definition

ChEBI: Tebuthiuron is an organonitrogen heterocyclic compound and an organosulfur heterocyclic compound.

General Description

Colorless odorless crystals. Non corrosive. Used as an herbicide.

Reactivity Profile

A urea, thiadiazole derivative.

Agricultural Uses

Herbicide: Tebuthiuron is a broad-spectrum herbicide that is used to control weeds in non-cropland areas, range lands, rights-of-way and industrial sites. In grasslands and sugar cane it controls woody and herbaceous plants and weeds such as alfalfa, bluegrasses, chickweed, clover, dock, goldenrod and mullein. Not approved for use in EU countries[ 115]. Registered for use in the U.S.

Trade name

BRULAN®; BRUSH-BULLET®; E-103®; GRASLAN®; HERBEC®; HERBIC®; PERFLAN®; RECLAIM; SHA-105501®; SPIKE®; SPRAKIL®; TEBULAN®; TIUROLAN®

Environmental Fate

Soil. In microbially active soils, tebuthiuron is degraded via demethylation. The average half-life in soil 12–15 months in areas receiving 60 inches of rainfall a year (Humburg et al., 1989).
When tebuthiuron was applied to a rangeland at a rate of 0.84 kg/ha, 38% remained after 21 months (Emmerich et al., 1984).
Groundwater . According to the U.S. EPA (1986) tebuthiuron has a high potential to leach to groundwater .
Plant. Degrades in plants via N-demethylation and hydroxylation of the t-butyl sidechain (Hartley and Kidd, 1987; Humburg et al., 1989).

Properties of 1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea

Melting point:	161-164°C
Density	1.2080 (rough estimate)
refractive index	1.6390 (estimate)
storage temp.	0-6°C
form	Solid
pka	13.36±0.46(Predicted)
color	White to Light yellow
Water Solubility	2.3g/L(temperature not stated)
λmax	255nm(lit.)
Merck	14,9095
BRN	527479
Exposure limits	LC50 (96-hour) for bluegill sun?sh 112 mg/L, rainbow trout 144 mg/L, gold?sh and fathead minnow >160 mg/L (Hartley and Kidd, 1987); acute oral LD50 for rats 644 mg/kg (Ashton and Monaco, 1991).
CAS DataBase Reference	34014-18-1(CAS DataBase Reference)
NIST Chemistry Reference	Tebuthiuron(34014-18-1)
EPA Substance Registry System	Tebuthiuron (34014-18-1)

Safety information for 1-(5-tert-Butyl-1,3,4-thiadiazol-2-yl)-1,3-dimethylurea

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07 Environment GHS09
GHS Hazard Statements	H302:Acute toxicity,oral H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P273:Avoid release to the environment.